Twin City Torque Requirements - ES-495 - Manual (Page 2)

RTF/HIB Torque Requirements (in-lb)
FAN NESTED INLET VANES EXTERNAL INLET VANES
SIZE CL 18/20 CL 23/24 CL 18/20 CL 23/24
180 N/A N/A 190 310
200 N/A N/A 230 370
220 N/A N/A 280 460
240 N/A N/A 340 550
270 390 640 410 670
300 480 780 500 820
330 580 950 610 1000
360 710 1170 750 1230
400 870 1430 920 1490
450 1060 1740 1120 1820
490 1290 2120 1360 2920
540 1580 2590 1670 3570
600 1930 3830 2690 4370
660 2810 4630 3250 5290
730 3430 5650 3970 6460
800 4200 6920 4860 7910
Industrial Torque Requirements (in-lb)
FAN EXTERNAL INLET VANES
SIZE CL 18/20 CL 23/24 CL 18/20
913 120 170 240
915 170 230 330
917 210 290 420
919 260 360 520
921 320 440 630
923 390 530 760
926 490 680 970
929 620 850 1220
933 800 1100 1580
937 1000 1380 1970
941 1230 1690 3180
945 1480 2680 3840
949 2320 3180 4560
954 2800 3840 5510
960 3470 4750 6810
NOTES:
1. Standard length of the handle supplied by Twin City Fan is
10". The force required to operate inlet vane is:
Torque in In-Lb
Length of Lever
2. For sizing actuator, multiply above torque by 1.2 for rotary and
1.5 for linear actuators.
Twin ciTy fan & blower | www.Tcf.com
5959 Trenton Lane N | Minneapolis, MN 55442 | Phone: 763-551-7600 | Fax: 763-551-7601